Oxide metallic effect
materials from engelhard
Patent No. U.S. 6,800,125 B2
Engelhard Corporation has received a patent for a color effect material comprising a platelet-shaped substrate sequentially encapsulated with a first homogeneous layer of silver, a second homogeneous layer of iron oxide directly on the silver layer, wherein the second layer is encapsulated by an outer layer that is selectively transparent to light directed thereon.